DS2431-A1

1024-Bit, 1-Wire EEPROM for Automotive Applications


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Description

The DS2431-A1 is an AEC-Q100 Grade 1 qualified version of the DS2431. The logical behavior of both versions is identical. The DS2431-A1 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431-A1 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop 1-Wire net environment.

Key Features

  • 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
  • Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode ("Write to 0")
  • Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
  • IEC 1000-4-2 Level 4 ESD Protection (+8kV Contact, +15kV Air, Typ)
  • Reads and Writes Over a 4.5V to 5.25V Voltage Range from -40°C to +125°C
  • Communicates to Host with a Single Digital Signal at 15.4kbps Using 1-Wire Protocol
  • Meets AEC-Q100 Grade 1 Qualification Requirements
  • Also Available as Standard Version for Industrial Temperature Range (DS2431)

Applications/Uses

  • Accessory/PCB Identification
  • Automotive Cable Assembly Identification
  • Automotive Sensor Identification and Calibration Data Storage
Part NumberMemory TypeMemory SizeBus TypeVSUPPLY
(V)
Package/PinsBudgetary
Price
maxSee Notes
DS2431-A1 EEPROM1K x 11-Wire5.25
TSOC/6
$1.56 @1k
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (47)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 5507 Understanding the DS1WM Synthesizable 1-Wire Bus Master

Quality and Environmental Data

Request Reliability Report for: DS2431-A1 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources


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05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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